Concealed hinge



N LUNDEEN.

CONCEALED HINGE.

APPLICATION FILED DEC. 8. 1920.

1 ,420,326. Patented June 20, 1922.

INVENTOR.

' nnns J. LUNDEIJN, or TACOMA, wasnrne-ron. Y

cononernn nines.

fipecification of Letters l atent. Patented June 1922.

Application filed December 8, 1920. Serial no} 429,117.

To all whom it may concern.

Be it known that I, NnLs J. LUNDEEN, a citizen of the United States, residing at Tacoma, in the State of Washington, have invented certain new and useful Improvements in Concealed Hinges, of which the following is a specification.

There are many instances in which it. 1s necessary to use a hinge, and in which it is desirable that the hinge be concealed. This is especially true in a certain type of table leaf, wherein the table leaf is composed of two sections, which are adapted to be folded one upon the other for the purpose of storing in the compartments under the table top.

The object of my invention is to provide a simple but effective and cheap concealed hinge.

Further object of my invention is to provide a concealed hinge, interlocking at the pivot point, without the intervention of a pintle.

Further object of my invention is to manufacture a hinge of this character from sheet metal, which may be manufactured with punch and dies at a very low cost and which can be tempered and made as strong as desired;

And with these and other objects in view my invention consists of the parts, and combination of parts, as will be hereinafter more fully set forth.

In the drawing' Fi ure 1 is a bottom plan view of the two mem ers, secured together by my concealed hinge.

Fi ure 2 is a side elevation of said two memhers, broken away showing the connection of the hinge to them.

Figure 3 is a longitudinal vertical section through the hinged members of the hinge.

Figure 4 is an enlarged detail sectional view of the two members folded together, showing the position of the parts of the hinge.

Figure 5 is an end view of Figure 4 Figure 6 is an enlarged detail sectional view on the line 6-6, Figure, 8, looking in the direction of the arrows.

Fig. 7 is a detail view of one of the hinged members.

The reference numerals 1 and 2 designate the two members of the table leaf.

I show the table leaf in this case merely for the purpose of illustrating my invention, it beingunderstood that my invention is not restricted in its use to table leaves.

These leaf sections are provided with recesses 3 and l in their under face and with recesses 5 and 6 in their end faces.

The reference numerals 7 and 8 are plates of identical construction, therefore, it isnot necessary to describe both of the plates.

' Plate 7 is provided with a right angle portion 9, adapted to be secured, by screws 10, in the recess 6, the plate 7 being provided with an elongated slot 11, below which is the recess 3. In the end of the right angle portion 9 of the plate 7 I form two pintle bearlugs 12, which are spaced apart and adapted to receive the pintle 13. v

The hinge member leis provided at one end with a pintle bearing 15, which is adapted to' be received between'the pintle bearings 12 and be secured there between by means. of the pintle 13,- as shown in the drawings. This hinge member is substantially arcuate and at one end is provided with grooves 16 within which the edges of the elongated slot 11 project, as shown, clearly, in figure 6, the end 17 of the hinge member projecting into the recess 3 of the table leafsection.

Substantially intermediate its end the hinge member 1a is provided with a slot 18 extending therethrough from one side thereof for a distance equal substantially one half the width of the member 14, the other side of the member 14, opposite the said slot 18,

is provided with an upstanding lug or abutment l9. Y I r The hinge member 20 is identical in construction to the hinge member 14. It is, therefore, unnecessary to describe it, the only difference being that the slot 21 extending to the slot 18 and the abutment 22, corresponding tothe abutment 19, are on the opposite side of the member 20 from that of the member 14, so that when the two parts, 20 and 14, assemble the abutment-s 19 and 20, prevent the separation of the two members, andI am thereby enabled to eliminate the pintle pin at the point of interlocking between the members 1d and 20 of the hinge. Another advantage of this construction is that the interlocking slot connection between the members 14 and 20 provides a more flexible joint between the two members of the hinge and in addition to this the-two hinge members, 14: and 20, are more readily assembled and di assembled, so that if one of the members becomes broken, or otherwise damaged, a new one can be readily substituted by merely removing the pintle pin 13.

It will be noted, in this connection, that the pintle pin 13 is not headed, therefore, no destructive effort is necessary to remove the pin for the purpose of repairing the hinge,

the pintle pin being prevented from entirely slipping out of engagement with the parts by reason of the fact that the length of the recesses 5 and 6 is not suflicient to permit of any extended movement lengthwise, of the 1n. p It will be noted that the end 17 of the member 14: and the end 23 of the member 20, are substantially at right angles to the major portion of the hinge member so that mediate their ends, one end of each hinge member being pivotally connected to the right angle portion of one of said plates, While its other end is slidably mounted in the elongated slot of the other plate.

2. In an invisible hinge, a pair of plates each having an elongated slot therethrough and each provided with a right angle portion, a pair of binge members having a sidewise slip connection with each other intermediate their ends, and an abutment on each hinge member opposite the slip connection, one end of each hinge member being pivotally connected to the right angle portion of one of said plates, while its other end is slidably mounted in the elongated slot on the other plate. r

3. An invisible hinge, a pair of plates, each having an elongated slot therethrough and each provided with a right angle portion, a pair of hinge members having a sidewise interlocking slip connection with each other, one end of each hinge member being pivotally connected to the right angle portion of one of said plates, While its other end is slidably mounted in the elongated slot of the other plate, and an abutment on the end of each hinge member within said elongated slot, adapted to engage the end Wall of the slot when the hinge is in extended position.

In testimony whereof I aflix my signature.

NELS J. LUNDEEN; 

